>>6117558The centaurrats develop a second layer of loose, dry and waterproof skin, almost like a plastic bag around their body. The space between the inner layer of skin and the outer layer of plastic-like membrane is filled with air, which both helps with thermoregulation and serves as a backup supply of oxygen.
Also, the "body bag" doesn't have an opening for the butthole, so whenever the rat shits it all just kinda collects in a sort of "flesh diaper" at the back. When the rat dies, the skin will eventually rupture, and surrounding organism will be subjected to a horrific chemical attack, one last surprise "fuck you" to any purple shark looking to get a bite.